Application and Design of Residential Building Energy Saving in Cold Climates

Climate is the one of main considerations for residential building design since the green and energy saving building has become the trend in the building industry. China is actively popularizing high energy-effective and environment harmonious buildings that integrate new techniques, new materials and new equipment. It is absolutely essential to summarize and demonstrate the application of energy-saving building in cold climates for the sake of a favorable economy and directions in the modern building industry. This paper discusses the cold climate features in China vis-à-vis the residential building layout, construction, building materials, envelope and cost from the aspects of environmental optimization and energy efficiency. The investigation combines indoor microclimates in order to decrease the building life cycle energy consumption. The air wall technology is studied for adoption of cold climate features. The research results through a National Demonstration Building Project (NDBP) show that the exterior wall total heat transfer coefficient is K=0.3w/(m2.k). Moreover, this four-layer dual heat-preservation exterior wall has more conformability and higher energy efficiency. It is completely successful for energy saving building project NDBP that deserves generalization because of adoption of cold climates features. The application of energy saving buildings can achieve social, environmental and economical benefits